If you say someone is a crab or crabby, you’re suggesting the person is grumpy. Someone who likes to whine and complain. But real crabs – crabs that are cousins to shrimp and lobsters – are quite different.
There are more than 7,000 kinds of crabs. Some live in water and some live on land. But they all have two things in common. They have large pincers, or claws. And they have a hard covering called an exoskeleton. (Exo means “outside” or “outer.” An exoskeleton is a skeleton on the outside of the body.) People cook and eat many kinds of crabs. But others are deadly.
